Sanjeev K. Mehra - 10 Mar 2026 Form 4 Insider Report for Avantor, Inc. (AVTR)

Role: Director
Signature: /s/ Scott Baker, as Attorney-in-Fact
Issuer symbol: AVTR
Transactions as of: 10 Mar 2026
Net transactions value: +$1,001,250
Form type: 4
Filing time: 11 Mar 2026, 17:10:29 UTC
Previous filing: 09 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MEHRA SANJEEV K	Director	RADNOR CORPORATE CENTER, BUILDING ONE,, SUITE 200, 100 MATSONFORD ROAD, RADNOR	/s/ Scott Baker, as Attorney-in-Fact	11 Mar 2026	0001029623

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AVTR	Common Stock	Purchase	$1,001,250	+125,000	+36%	$8.01	475,000	10 Mar 2026	By limited liability company	F1, F2
holding	AVTR	Common Stock						8,106	10 Mar 2026	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $7.98 to $8.05, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth above.
F2	The Reporting Person disclaims beneficial ownership of the securities reported herein as indirectly beneficially owned, except to the extent of any pecuniary interest therein.

Content

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $7.98 to $8.05, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth above.

The Reporting Person disclaims beneficial ownership of the securities reported herein as indirectly beneficially owned, except to the extent of any pecuniary interest therein.